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CC2640 uart , can't read after a write

Other Parts Discussed in Thread: CC2640

Hi,

I am using a LSR sable-x (cc2640 5x5) on a custom board, i am using the project zero (tirtos_simplelink_2_13_00_06) without power saving and have implemented uart using the wiki:http://processors.wiki.ti.com/index.php/Cc2640_Adding_a_UART_or_SPI_driver_to_a_Sample_Project

I am using callback mode for read and write.

If i loop the rx and tx together everything works or if i am only reading then everything works.

however as soon as i write to another device (even just echo *from the same location as the read) the read call back is never called again. Even looping TLread() the buffer always returns empty after the write.

Thank you in advance.

Regards,

Hayden